Re: Motor oil in trans
[Re: tscuda]
#158521
11/29/08 10:20 AM
11/29/08 10:20 AM
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Anonymous
Unregistered
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Anonymous
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Also,put your motor oil in anything but a 904/727 and see how long it lasts.Even Type F is not recommended.
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Re: Motor oil in trans
#158522
11/29/08 10:25 AM
11/29/08 10:25 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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The first Fluid Drives that Chrysler made not only used motor oil but it used the same oil as the engine it was attached to, they shared the oil.
While the Fluid Drive wasn't an automatic, per se, it did have a torque converter and other features present in what we call an automatic.
As for switching from gear oil to ATF in a stick, that was done to ease shifting, NOT for durability.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Motor oil in trans
[Re: Supercuda]
#158523
11/29/08 10:29 AM
11/29/08 10:29 AM
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Anonymous
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Anonymous
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Quote:
The first Fluid Drives that Chrysler made not only used motor oil but it used the same oil as the engine it was attached to, they shared the oil.
While the Fluid Drive wasn't an automatic, per se, it did have a torque converter and other features present in what we call an automatic.
As for switching from gear oil to ATF in a stick, that was done to ease shifting, NOT for durability.
And constant temperatures below 30*.
Manufacturers spend millions on R&D to make things work.Ever wonder why? Another example is power steering fluid.How many use ATF fluid in a power steering pump? It will work but if you want to see the difference,take two clean pumps,run one with each for a year and take them apart.You won't run ATF when you see the difference.
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Re: Motor oil in trans
[Re: Supercuda]
#158524
11/29/08 12:17 PM
11/29/08 12:17 PM
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Joined: Dec 2003
Posts: 5,314 Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
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As for switching from gear oil to ATF in a stick, that was done to ease shifting, NOT for durability.
I agree that's part of it, but the thinner oil get's into more places, so it protects better too.
With 80's honda manual transmissions, it was very common to see 5th gear burned out. The Common cause was adding gear oil instead of using the recomended 10w30 motor oil. The gear oil was too thick to make it out to 5th gear. The teeth would disintigrate.
Back to the oil in the auto debate , I remember at auto school (all those years ago) them telling us the base ingredient in dexron was 10w30 motor oil. The rest of it was all detergent, pressure, and heat additives.
It can be debated as to whether engine oil has better lube properites, but how often does an auto trans fail from lack of lube anyway? Virtually never. It is always heat, and lack of pressure that kills autos.
Although I don't think using motor oil is a good idea, I doubt it did any damage. It's just a good reason to go through it now that you know.
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Re: Motor oil in trans
[Re: dave571]
#158525
11/29/08 12:58 PM
11/29/08 12:58 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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up yours
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on the flip side Chrysler changed the spec from ATF to motor oil in some of the FWD 5 speeds, durability reasons were given.
ATF is thin, lack of "shock" ability is part of it's problem. As for autos failing for lack of lube, I have rebuilt more than on Torqueflight that had wear issues with bushings. That wasn't teh failure mode, but it was an issue.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Motor oil in trans
[Re: tscuda]
#158531
12/01/08 09:47 AM
12/01/08 09:47 AM
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Joined: Jan 2006
Posts: 8,162 USA
360view
Moparts resident spammer
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Moparts resident spammer
Joined: Jan 2006
Posts: 8,162
USA
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I am working from memory and don't recall all the details but I am pretty sure that Bill Kondolay (of Diesel Trans in Canada) http://www.dieseltrans.com/phpBB/index.phpseveral years ago ran some experiments on 47R automatics comparing Mobil One Syn motor oil (can't remember viscosity) against Chrysler ATF+ (can't remember whether +2 or +3) I have a vague memory that it initially looked promising for Mobil One Syn motor oil but did not work out well in the long run Many years ago I had a good & imformative telephone conversation with an engineer at Universal Lubricants, the makers of the 'Red Bottle' and 'Black Bottle' trans additives about what alternatives would be superior to ATF+2, and this UL engineer seemed confident that Black Bottle additive plus Mobil One Syn ATF was at least as good as +3 Chrysler & Lubrizol laid out the ATF+4 (Type 9602) technical story in a 14 page SAE document (paper# 982674)
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Re: Motor oil in trans
[Re: dulcich]
#158535
12/02/08 11:29 AM
12/02/08 11:29 AM
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Joined: Jan 2003
Posts: 6,816 Alton, IL
Dakota_Don
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master
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Posts: 6,816
Alton, IL
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Quote:
I use tranny fluid in my engines, motor oil in my tranny's and brake fluid in my power steering, in the appropriate quantities, of course. -dulcich
I use 1/2 qt of 30wt in some of my transmissions..and i have used trans fluid in old dirty engines butt what does brake fluid do in the power steering??
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Re: Motor oil in trans
[Re: Dakota_Don]
#158536
12/02/08 12:23 PM
12/02/08 12:23 PM
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Joined: Jan 2003
Posts: 10,968 Hampton, Ga.
70dart360
Green Meister
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Green Meister
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Posts: 10,968
Hampton, Ga.
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Brake fluid will help keep the seal swollen and soft to prevent leaks. I've used it in a tranny that'd hardly pull before, it worked great for about a week.
70 Dart Swinger
72 D-100 440 shortbed
76 Pinto, 68k 21mpg!
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Re: Motor oil in trans
[Re: dave571]
#158537
12/02/08 06:36 PM
12/02/08 06:36 PM
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Joined: Apr 2007
Posts: 871 WA 98043
thecarfarmer
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super stock
Joined: Apr 2007
Posts: 871
WA 98043
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Quote:
...With 80's honda manual transmissions, it was very common to see 5th gear burned out. The Common cause was adding gear oil instead of using the recomended 10w30 motor oil. The gear oil was too thick to make it out to 5th gear. The teeth would disintigrate....
A low oil level would do the same thing, too. Replaced a couple of 5th gear sets where someone had let 'em get low.
IMHO, running low on oil, hi temp on oil, or over-long intervals on oil is usually worse than using the "wrong" oil.
Quote:
...I was thinking when I seen that that it might have been done to solve a problem. Like how they used to add sawdust to the atf.
I've never heard of putting sawdust in an auto; I know guys would do it to quiet a noisy stickshift, but, I'd imagine that it doesn't do a torque convertor, clutches/bands, front pump, etc. any favors.
I've also put type F into 727's to make 'em apply clutches faster. I even ran a 50/50 mix of straight 30 and type F to crutch years of life out of an AT in a Geo Metro (yeah, baby!) that was starting to slip. The different friction characteristics stopped the slipping for at least three years until I sold the car.
-bill
Seduce the attractive, and charm the rest.
******
489 C.I.D., roller cam, aftermarket heads, tunnel ram, stock '54 Dodge rear axle assembly: which of these doesn't belong?
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Re: Motor oil in trans
[Re: tscuda]
#158539
12/07/08 04:45 PM
12/07/08 04:45 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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The saw dust deal was a used car dealer would have their mechanic put it in the rear axle not the trans to quiet one that was noisy.A noisy rear axle in a daily driver will last a long time but the noise would scare away a potential buyer.
live every 24 hour block of time like it's your last day on earth
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